1. Write four in standard form. A. 5 B. 2 C. 3 D. 4 Hint 2. Write 28 in word form. A. eighty-two B. twenty C. twenty-eight D. twenty-seven Hint 3. Find the missing numbers.12, ___, 14, ___ A. 13, 15 B. 12, 12 C. 15, 13 D. 13, 16 Hint 4. Find the missing number.5, ___, 7 A. 5 B. 8 C. 6 D. 4 Hint 5. Find the missing numbers.6, ___, 8, ___ A. 6, 9 B. 7, 10 C. 7, 9 D. 8, 9 Hint 6. Find the missing number.55, 60, 65, ___ A. 70 B. 80 C. 75 D. 66 Hint 7. Estimate. Compare to the group of 10. A. about 60 B. about 120 C. about 30 D. about 90 Hint 8. Add. A. 7 B. 9 C. 10 D. 8 Hint 9. Look at the picture. Write the number sentence. Add. A. 2 + 3 = 5 B. 3 + 4 = 7 C. 1 + 6 = 7 D. 2 + 3 = 6 Hint 10. Find 1 + 1. A. 2 B. 0 C. 1 D. 3 Hint 11. Find the sums.3 + 3 = ___3 + 2 = ___ A. 6, 6 B. 6, 5 C. 5, 5 D. 7, 5 Hint 12. Find the sum. A. 9 B. 12 C. 13 D. 11 Hint 13. Find the sum. A. 9 B. 10 C. 8 D. 7 Hint 14. Find the sum. A. 11 B. 12 C. 10 D. 13 Hint 15. Subtract.6 − 1 = ___ A. 5 B. 3 C. 7 D. 4 Hint 16. Subtract. Use the number line.8 − 3 = ___ A. 5 B. 6 C. 4 D. 11 Hint 17. Find the missing numbers.9 + 8 = ______ − 9 = 8 A. 16 B. 17 C. 18 D. 15 Hint 18. Find the missing numbers.8 + 7 = ______ − 8 = 7 A. 16 B. 18 C. 17 D. 15 Hint 19. Find the missing numbers.6 + 3 = ______ − 6 = 3 A. 7 B. 9 C. 8 D. 10 Hint 20. Find the missing numbers.___ + 6 = 1414 − ___ = 6 A. 9 B. 8 C. 6 D. 7 Hint